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    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        .box {
            margin: 0 auto;
        
            width: 1226px;
            height: 614px;
            /* background-color: pink; */
        }
        .left {
            float:left;

            width: 234px;
            height: 614px;
            background-color: #800080;
        }
        .right {
            float:right;

            width: 978px;
            height: 614px;
            /* background-color: green; */
        }
        ul {
            list-style: none;
        }
        .right li {
            float: left;
            margin-right: 14px;
            margin-bottom: 14px;

            width: 234px;
            height: 300px;
            background-color: #87ceeb;

        }
        /* 如果父级的宽度不够，子级会自动换行 */
        /* 第四个li和第8个li右侧间距清除 */
        .right li:nth-child(4n) {
            margin-right: 0;
        }
    </style>
</head>
<body>  
    <div class="box">
        <div class="left"></div>
        <div class="right">
            <ul>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
            </ul>
        </div>
    </div>
</body>
</html>